MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
An ideal gas is heated from 27 C to 627 C at constant pressure. If initial volume was 4m3, then the final volume of the gas will be? |
| A. | 2m<sup>3</sup> |
| B. | 4m<sup>3</sup> |
| C. | 6m<sup>3</sup> |
| D. | 12m<sup>3</sup> |
| Answer» E. | |
| 2. |
Temperature of oxygen kept in a vessel is raised by 1 C at constant volume. Heat supplied to the gas may be taken partly as translational and partly rotational kinetic energies. Their respective shares are ___________ |
| A. | 60%, 40% |
| B. | 50%, 50% |
| C. | 100%, zero |
| D. | 40%, 60% |
| Answer» B. 50%, 50% | |
| 3. |
The number of degrees of freedom for a diatomic gas molecule is ___________ |
| A. | 2 |
| B. | 3 |
| C. | 5 |
| D. | 6 |
| Answer» D. 6 | |
| 4. |
An ant is walking on the horizontal surface. The number of degrees of freedom of ant will be ___________ |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 6 |
| Answer» C. 3 | |
| 5. |
Statement: For an ideal gas at constant temperature, the product of the pressure and volume is a constant.
|
| A. | Both statement and reason are true and explanation is the correct explanation of the statement |
| B. | Both statement and reason are true but the explanation is not a correct explanation of the statement |
| C. | Statement it true but the reason is false |
| D. | Both statement and reason are false |
| Answer» C. Statement it true but the reason is false | |
| 6. |
A vessel contains a mixture of 1 mole of oxygen and 2 moles of nitrogen at 300 K. The ratio of the average rotational kinetic energy per O2 molecule to that per N2 molecule is? |
| A. | 1:1 |
| B. | 1: 2 |
| C. | 2:1 |
| D. | Depends on the moment of inertia of the two molecules |
| Answer» E. | |
| 7. |
At room temperature, the rms speed of the molecules of a certain diatomic gas is found to be 1920ms-1. Which is the gas? |
| A. | H<sub>2</sub> |
| B. | F<sub>2</sub> |
| C. | O<sub>2</sub> |
| D. | Cl<sub>2</sub> |
| Answer» B. F<sub>2</sub> | |
| 8. |
In the upper part of the atmosphere, the kinetic temperature of the air is of the order 1000K. Therefore one feels extremely hot. |
| A. | True |
| B. | False |
| Answer» C. | |